Hoisting-machine.



No. 887,190. PATENTED NOV. 27, 1906.

J. CAMPBELL.

HOISTING MACHINE.

APPLICATION FILED JAN.14,1905.

4 SHEETS-SHEET 1 PATENTED NOV. 2'7, 1900'.

J. CAMPBELL.

HOISTING MACHINE.

APPLICATION rim JAN, 14, 1905.

4 SEEBTS-SHEET 24 Flg 2- No. 837,190. PATENTED NOV. 27, 1906. J. CAMPBELL. HOISTING MACHINE.

APPLICATION FILED JAN.14, 1905.

4' SHEETS-SHEET 4.

turn s'rrns .a'rnu oriuon HOISTlNG-=IVIAOHINE.

Specification of Letters Patent.

Patented Nov. 27, 1906.-

- Application filed January 14, 1905. Serial No. 241.087-

To all 1071/0111 it may concern.-

Be it known that I, JEREMIAH CAMPBELL, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Hoisting-Machines, of which the following is a specification.

My invention is primarily an improvement in starting and stop ing mechanisms, but is especially adapted or use with hoisting-engines for steam-shovels, The requirements of a hoisting apparatus for such shovels are that the shovel may be easily started upward, may be held in any elevated position, or may be released and lowered under control of a brake, and it is also desirable that this mechanism shall be at all times under the easy control of a single operator. For this purpose I have shown means operated, preferably, by steam or compressed air, whereby not only is connection easily made between the driving member of a clutch and a source of power, but also between the driving and the driven members of a clutch, and atsuch time as the power has been released from the winding-drum the drum will be under brake control. These purposes are all fulfilled by the construction shown in the drawings forming a part of this specification, in which- Figure 1 is a plan; Fig. 2, a side elevation of a device embodying my invention, Fig. 3 being a longitudinal section on line 3' 3 of Fig. l and Fig. 4, a sideelevation corresponding to Fig. 2, being in a different position from that of Fig. 2. Fig. 5 shows a detail of the slide.

A is the bed or frame on which the various parts are mounted, A A being supports furnishing bearings for the shaft B, on which the hoisting-drum and the power-gear are mounted, the two being provided with clutch-surfaces, as below described. The shaft B is provided with fixed collars b, one on each side of the bearing A, to prevent endwise motion of the shaft. At its farther end the shaft is slotted, as at I), and a block 0 is located Within said slot to engage the end of the hoisting-drum C. This block 0 is held within the slot in the shaft by cotter-pins c. From the slot 1) to the adjacent end of the shaft there is a passage b through which projects a pin b threaded at its outer end 12 where it passes through in a cap b attached to the support A Ata threaded opening the rod g,

tached to the outer end of the pin 1) is a leverarm I), hanging downwardly therefrom into position to-be engaged by a cam-slide D in the manner to be hereinafter described, this lever-arm carrying a roll b at its lower end. A spring 12 maintains the arm I) in a normally operative position.

The hoisting-drum'C is of ordinary construction. It is free to slide on the shaft B and also to turn thereon. It is provided, preferably, with a conical surface 0 for engagement with the driving member of the clutch. The driving member of the clutch comprises a power-driven gear E, having a surface e adapted to be engaged by the surface 0 on the drum C when the drum and gear are in contact, and so rotate the drum.

The construction so far described issuch that the turning of the lever-arm b from its position in Fig. 2 to its position in Fig. 4

against the force of the spring b and the consequent advancement of the pin b 0 will cause the engagement of the clutchsurface 0 with the clutch-surface e and the consequent rotation of the drum by the rotating gear E.

Power is applied to the gear E in the form of my invention shown by means of a pinion F on the shaft f, mounted in bearingsf, supported from the bed A. The shaft f carries at one end a gear f, in mesh with a pinion f 3 on the shaft f which maybe the prolongation of the axis of the armature of an electric motor or which may receive power in any other desired way. In the form of my invention shown, H represents a portion of the housing for a motor suitable for the purpose.

To separate the members of the clutch, the spring b returns the lever-arm b to its normal position when the force moving it has been withdrawn, and the clutch members are caused to separate by a spring 0, located about the shaft B and in a chamber 0 in the drum C and bearing against the gear E.

' To stop the drum C and hold it from turning, a brake-surface g is provided upon its periphery, around which'is passed a brakestrap G, comprised, as shown in the drawings, of two parts connected by the boltv G and nut G One end of this strip is attached to the other end to a pin g carried by arms g" attached to the said rod and moved thereby. This rod 9 .is mounted to turn in bearings g on the bed A and carries at its outer end an upwardly-projecting lei ver-arm g and a downwardlyprojecting leand block,

ICC

' spring 9 returning it to its released position when it is free. In order to adjust the brakestrap G for Wear or stretch, I prefer to make it of two parts, which are joined together by means of a bolt G, so that as the parts elongate with use the nut Gr may beturned up to bring the ends of the parts together and shorten the strap.

Within a housing His an electrical con.- troller, which may be of any desired form, the

' armh, by means of which resistances are cut out, being operated by a link h, connected with one arm 71/ of a' lever fulcrumed upon the support A The arm k of the lever carries on its end a roll h, which lies in the path of the slide D. A spring 72?, fastened to the lever-arm h and connecting with a portion of the frame, holds the lever in a normally operative position. Thusit will be seen in the form of my invention shown there are three levers or lever-arms capable of being moved by the same part, which part, as will now be explained, engages loosely therewithviz., the lever-arm b by m eans of which the osition of the clutch is controlled, the ever-arm g, by means of which the brake is controlled, and the lever-arm ht,

by means of which power is supplied through V the controller to operate the gear E. The

part shown for operating these levers or 1ever-arms is the cam-slide D, mounted in guideways (1, attached to the upright A so der d 5 that it may be moved horizontally. The slide is operated in the construction shown by means of a connecting rod d, by which it is connected with a-piston within the cylin- This cylinder has a pipe d? connectmg one end, and a pipe d connecting the ot er end, with a four-way cock d operated by means of a handle d. air inlet, and d the exhaust. The construction of this four-way cock is such that either end of thecylinder may be connected with the steam or air supply, the other end of the cylinder being at the same 'timeconnected with the exhaust, or the steam or air supply may be cut ofi entirely, as'circumstances require. The construction of this valve is not explainedfurther, as it is of a character well own.

The cam-slide D is provided with abutments D and D the abutment D being at the proper level to engage the roll I) on the d is the steam or r end of the lever-arm b and the abutment D being of proper level to engage the roll it on the end of the lever-arm h The rear end D ofthe slide is sufficiently high to serve also as .an abutment and engage the roll g on the brake-arm g and the slide D is so pro ortioned with regard to the position of t ese 1 the slide D to the left will cause power to be applied by the engagement of the abutment D with the lever-arm k of its lever to throw the arm h of the controller, so as to cut out resistance and cause the proper application of power to the power-shaft f. At the same time the lever-arm b will preferably be turned so as to rest .on the surface d. This operation of the slide D is caused by simply turning the handle d to connect the source of steam or compressed-air pressure with the pipe (i so that the piston within the cylinder (1 will drive the slide forward sufficiently far for the purpose, such position being shown in Fig. 4.

When the shovel or whatever the load may be has been hoisted sufficiently high and it is desired to maintain the load in its hoisted position, the cock d is turned so as to ex.- haust the steam or air from the pipe d sufficient steam being let into the pipe (2 to withdraw the cam-slide D sufficiently far to shut off ower from the power-shaft by turning bac the arm h or-its equivalent, leaving the lever-arm b upon the surface d and the clutchsurfaces engaged. A further withdrawal of the slide D releases the arm I)", so that the clutch-surfaces separate, and the brake acts upon the drum to allow the shovel to de- IIC,

scend slowly, its rapidity de ending upon 1 how far the slide D is cause to move the brake-arm 9 Thus by the simple manipulation of the handle (i -the shovel may be hoisted or lowered or maintained in any po sition.

The means for operating the'lever-arms referred to is shown as a slide ;.but this is, in effect, a cam, which by virtue of its action on the several cam-rolls b 9 and h. accomplishes the desired movements of the parts connected therewith.

Instead of the springs'which retractthe lever-arms b and h the slide may be made with suitable slots, as shown in Fig. 5 at b and h. The slide D may also be provided with a similar slot to operate the brake-arm, if thought best. I have shown my invention embodied in a machine operated by compressed air or steam; but it is evident that my invention really consists in the operation of the clutch, the application of power, and the application of a brake by the same instrumentality, and in a certain predetermined cycle of movements such that by the one means, whether it be compressed air or steam or a single lever capable of moving such an instrumentality as the slide D, the proper sequence of events will necessarily follow. It is also evident from this that while a slide, such as the' slide D, may be desirable for use in this connection other means of connecting the various arms and levers may be substituted without departing from the substance of my invention. Moreover, it will be apparent to any one skilled in the art that instead of the electrical means indicated for applying power to the drum a motor of any other character thereafter power may be applied to said power-shaft, as described.

2. In a hoisting-machine, a drum, a poweractuated means for operating said drum, a clutch adapted to throw said drum into and out of operative connection with its said opveratin means, mechanism for controlling drum-o crating means, and a movable cam adapte to engage with said clutch-operating mechanism and the mechanism controlling the said drum-operating means whereby said drum through said clutch will be thrown into operative connection with its said controlling means and thereafter the operation of the drum be effected.

3. In a hoisting-machine, a drum, a poweractuated means for operating said drum, a clutch adapted to throw said drum into and out of operative connection with its said operating means, a brake for controllin' said drum, mechanism for controllin said 0 utch, mechanism for controlling said ing means, mechanism for controlling said brake, a cam presenting a series of surfaces or parts adapted to enga c with said clutchcontrolling mechanism, t e said mechanism controlling said drum-operatin means and the mechanism controlling sai brake, and means for operating said cam.

- 4, In a hoisting-machine, a drum, a power-, actuated means for operating said drum, a clutch adapted to throw said drum into and mechanism for controlling said clutch, mech' anism for controlling said drum-operating means, mechanism for controlling said brake,

and a power-driven member presenting a series of surfaces or parts adapted in proper succession to engage with, or be moved into a position of disengagement with respect to said clutch-controlling mechanism, said mechanism controlling said drum-operating means and the mechanism controlling said brake.

5. In a hoisting-machine, admin, a poweractuated means for operating said drum, a clutch adapted to throw said drum into and out of operative connection with said operating means, a brake for controlling said drum, mechanism for controlling said clutch, mechanism forcontrolling said drum-operating means, mechanism for controlling said brake, all of which mechanisms comprise in part levers arranged in such order of succession as to be successively engaged by a single actuating member, said actuatingmember and means foroperating the same.

6. In a hoisting-machine, a drum, a poweractuated means for operating said drum, a clutch adapted to throw said drum into and out of operative connection with said operating means, a brake for controlling said drum, mechanism for controlling said clutch, mechanism for controlling said drum-operating means, mechanism for controlling said brake, all of which mechanisms comprise in part levers, a cam-slide D adapted to successively engage said levers for operating the parts controlled thereby, and means for controlling said slide.

7. In a hoisting-machine, a drum, a poweractuated means for operating said drum, a clutch adapted to throw said drum into and out ofoperative connection with its said opcrating means, a brake for controlling said. drum, mechanism for controlling said clutch, mechanism for controlling said drum-operating means, mechanism for controlling said brake, all of which mechanisms comprise in part levers, means for automatically retaining said levers in a normally operative position, and means for oper'atin said lovers in proper order of succession, w ereby the operative parts -of the machine are caused'to operate as described.

8. In a hoistin mechanism, a shaft, and a drum and clutc mechanism mounted on said shaft, a brake mechanism adapted to control the operation of said drum and a power mechanism adapted to be applied to the driving member of said clutch, and means whereby said clutch may be engaged, said brake may be operated, and power may be connected to and disconnected from said drum, said means comprising a slide, and suitable connections between-said slide, said clutch mechanism, said brake-operating "mechanism, and said 'power-appl 'ng mechanism, and means whereby said s 'de is operated, as set forth.

'9. In a hoisting-machine, a means. for starting, stopping and controlling a hoistingdrum comprising a part common to each of said'mechanisms, and means for operating it comprising a cylinder and piston with suitable connections whereby compressed air or to its equivalent is caused to operate the piston therein.

10. In a hoisting apparatus, a clutch mechanism, a freely-rotating drum forming, a part thereof, means for causing the engage- I l 5 ment of the parts of said clutch, comprising a threaded pin, andan arm connected thereto, a lever, a power-controller connected therewith, and a brake havinga suitable operatinglever, saidclutch-throwing arm, said powerlever, said braked'ever, each having a portion lying in a common'plane, and means movable in said plane foroperating them in a predetermined order, as described. 1 v 11. In a hoisting apparatus, a clutch 2 5 mechanism, a freely-rotating drum forming part thereof, means for engaging said drum and the other'portions of said clutch-mechan-' ism, a lever, a 'power controll'er connected therewith, and a brake mechanism, and a 0 part adapted to control the position and the rotatability of saiddrum andthe rotation of said clutch mechanism, whereby the movement of said part in one direction will cause the clutch to engageand thebrake to release -3' 5 the-drum, and power to be applied thereto,

' and the reverse movement thereof will cause a'reverse ofsaid operations. 12. In a hoisting-machine, a drum, 1a, power-actuated -means"for operating said 40 drum a clutch adapted to throw said drum intoand out of operative connection with its said operating means, a brake for controlling said drum, mechanism for controlling said clutch, mechanism for controlling-said drumoperatin means, mechanism for-controlling said bra e, all of which mechanisms comprise in part levers, and means loosely engaging with said levers in vproper order of succession, whereby the operative parts of the machine are caused to operate a'sdescribed. x 13. In an apparatus of the kind descrlbed, a winding-drum, provided with a brake, a

source of motive power, a clutch on the axis of said drum to connect the source of motive power with the said drum, means to-control the said motive power, and unitarymeans to successively operate the brake, the clutch,

and the controlling means.

14. In an apparatus-of thekind described, a prime mover, controlling means for the same, a winding-drum, a' clutch on the axis of said drum to connect the said drum with the prime mover, a brake adapted to retard said drum, and unitarymeans to successively operate the brake, the clutch, and-the controllin means for the said prime mover.

will-be thrown toconnect said prime mover with said drum. 4

16. In a hoisting-machine, aprime mover, a drum, a clutch, one memberof which 1s 1n- "tegral with said drum, the other member being operated by said prime mover, a brake and a starter for said mover, and means common to said clutch, said brake and saidprimemover starter whereby-said parts are successively operated, as described.

JEREMIAH CAMPBELL. In presence of GEORGE O. G. CoALE,

MARTIN V. FOLEY.

operated by said slide whereby said clutch 

